GM Service Manual Online
For 1990-2009 cars only

The EBCM Scan Tool Data Lists contain all the antilock brake system related parameters that are available on the scan tool. The parameters on the list are arranged in alphabetical order. The "Column" data list shows the location of the parameter on the scan tool displayed menu selections.

Use the EBCM Scan Tool Data Lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all the diagnostic procedures with the ABS Diagnostic Starting Point. Use the EBCM Scan Tool Data Lists only after the following is determined:

    • There is no published DTC procedure nor published symptom procedure for the customer concern.
        OR
    • The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The Typical Data Values are obtained from a properly operating vehicle under the conditions specified in the first row of the Scan Tool Data List table. Comparison of the parameter values from the suspect vehicle with the Typical Data Values may reveal the source of the customer concern.

EBCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition is ON, engine OFF, and vehicle is stationary

ABS Active

ABS

Yes/No

No

Brake Fluid Level

ABS

OK/Low

OK

Brake Switch

ABS

Applied/Released

Released

DRP Active

ABS

Yes/No

No

DRP Disabled

ABS

Yes/No

No

Front TCS Isolation Solenoid

TCS

Active/Inactive

Inactive

Front TCS Prime Solenoid

TCS

Active/Inactive

Inactive

Ignition Voltage Signal

ABS

Volts

B+

Left Front Wheel Speed

ABS

km/h or mph

0

Left Rear Wheel Speed

ABS

km/h or mph

0

LF Inlet Valve Solenoid

ABS

Active/Inactive

Inactive

LF Outlet Valve Solenoid

ABS

Active/Inactive

Inactive

Longitudinal Accelerome

TCS

Volts

0

Loose Surface Mode (TC2)

TCS

Disabled/Enabled

Disabled

LR Inlet Valve Solenoid

ABS

Active/Inactive

Inactive

LR Outlet Valve Solenoid

ABS

Active/Inactive

Inactive

Pump Motor Relay Command

ABS

On/Off

Off

Rear TCS Isolation Solenoid

TCS

Active/Inactive

Inactive

Rear TCS Prime Solenoid

TCS

Active/Inactive

Inactive

RF Inlet Valve Solenoid

ABS

Active/Inactive

Inactive

RF Outlet Valve Solenoid

ABS

Active/Inactive

Inactive

Right Front Wheel Speed

ABS

km/h or mph

0

RR Inlet Valve Solenoid

ABS

Active/Inactive

Inactive

RR Outlet Valve Solenoid

ABS

Active/Inactive

Inactive

Right Rear Wheel Speed

ABS

km/h or mph

0

Solenoid Valve Relay Command

ABS

On/Off

On

TCS Active

TCS

Yes/No

No